Planetary gearing for rolling-machines.



J, G. f G. R. INSHAW. PLANET/mv GEMING FOR nomme mncmmsa APPLICATION FILED NOV. I4. I'G.

my LA@ @ga/afg@A mem/Rp mrs/mw PATENT GlElEllEEo JOHN GEORGE INSHAW AND GEORGE RICHARD INSHAW, 0F GARTCOSH, SCOTLAND.

'.PLANETARY GEARING FOR ROLLING-MACHINES.

Application filed November 111, 1916.

To all whom t may concern:

Be it known that we, J Or-iN Gnonen 1N- si-niiv and Gaone-n RICHARD INsHAiv, both subjects of the King Of Great Britain, residing at Lochwood House, near Gartcosh, in the county Of Lanark, Scotland, have invented new and useful improvements in Planetary Gearing for Rolling-Machines, of which the following is :i specification. i

This invention relates to machines for pil gering hollow blooms, billets, Or the like,`

in making weldless, or seamless tubes by means Of hydraulic apparatus and consists in the application to such machines of the class of apparatus by means Of which continuous rotary motion is, by means of sun and planetary gear, caused to impart intermittent rotary motions of partial rotation to the mandrel carrier Of the machine and consequently to the work carried by the mandrel, Our invention providing means by which the said sun and planetary gear is driven, such that it will withstand the strains put upon it by the pilgering operations.

`We will describe our invention with reference to the accompanying drawings in which Figure 1 is a side elevation of mechanism and means for driving it in accordance with this invention. Figs. 2 and 3 being elevations at right angles to Fig. l; (Fig. 3 being partly in section),

it is to be understood that the mechanisni is applied to a pilgering machine, the motions of intermittent rotation being conveyed from the said machine from the shaft L, to the shaft j, (carrying the mandrel supporting the work) by gear, in accordance with our invention.

The mechanism by which movements of partial rotation are intermittently given to the mandrel and the work carried upon it is as follows:

The sun-wheel is lxed to a hollow shaft 2, mounted on the rear part Of the shaft y'. The said sun-wheel is driven from the driving sha-ft L, by means Of a belt Z pass ing over pulleys 3, and 2, keyed respectively to the shafts 2 and L. Planet pinions m, (of which four are shown), are

'freel 1 mounted u on )ins m2 nro'ectinff o l o laterally from a disk M, (constituting the carrier) and engage with the sun-Wheel z',

Specification of Letters Patent.

Patented Nov. 2th, mit..

SeriaI No. 131,353.

and with an internally toothed wheel 70, keyed to the rear part of the shaft j. The boss Of the carrier M, is mounted loosely On the shaft 2, and the carrier has an arm ma, connected by a rod m4, to a crank pin n2, of a crank disk a, keyed to the shaft L, so that, as the said shaft L, rotates, the carrier M, with its planet pinions m, is Oscillated upo-n'the shaft 2. l/Vhen the carrier M, is Oscillated in the reverse direction to the direction of rotation Of the sun-wheel the said sun-wheel gives a purchase tO the planetary pinions m, so that they impart a turning movement to the internally toothed wheel lc, and shaft lhen the carrier M, is ocillatcd in the opposite direction the Vplanetary pinions m, rotate idly and the internally toothed wheel 72, and shaft y', are not operated.

ln Order to prevent the breakage of parts under any excessive strain which may arise, the belt Z, can be arranged to slip slightly under such strain.

The oscillations of the carrier M, can be varied in extent by fitting the crank pin n2, into one, or other, of the crank pin holes n3, of which for example four are shown at different distances from the center of the crank-disk n.

Te claim:

In a pilgering mill, a mandrel shaft an internally-toothed wheel secured thereto, a pulley free on said shaft, a sun wheel can ried by said pulley; a coaxial, freely mounted carrier; planetary gear mounted on said carrier and engaging both said sunwheel and internally toothed wheel; a shaft and means for constantly driving the same during the Operation of the pilgering machine; a pulley and crank carried by said constantly driven shaft; a band passing over said pulley and the pulley which carries the sun-wheel, and a rod connecting the crank to the planetary gear carrier, all substantially as hereinbefore described.

In testimony whereof we have signed our names to this specification in the presence of two subscribing witnesses.

JOHN GEORGE INSHAV.

GEORGE RICHARD INSHAV. Titnesses M. THOMLINSON,

JOHN N. MGCANN, Jr.

Copies of this patent may be obtaine. for ve cents each, by addressing the Commissioner or Patents, Washington, ID. C. 

